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Imaging flaws in thin metal plates using a magneto-optic deviceAn account is given of the capabilities of the magnetooptic/eddy-current imager (MEI) apparatus in the case of aging aircraft structure-type flaws in 2024-T3 Al alloy plates. Attention is given to images of cyclically grown fatigue cracks from rivetted joints in fabricated lap-joint structures, electrical discharge machining notches, and corrosion spots. Although conventional eddy-current methods could have been used, the speed and ease of MEI's use in these tests is unmatched by such means. Results are displayed in real time as a test piece is scanned, furnishing easily interpreted flaw images.
Document ID
19930034673
Document Type
Conference Paper
Authors
Wincheski, B. (NASA Langley Research Center Hampton, VA, United States)
Prabhu, D. R. (NASA Langley Research Center; AS&M, Inc. Hampton, VA, United States)
Namkung, M. (NASA Langley Research Center Hampton, VA, United States)
Birt, E. A. (NASA Langley Research Center; AS&M, Inc. Hampton, VA, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1992
Publication Information
Publication: In: Review of progress in quantitative nondestructive evaluation. Vol. 11A; Proceedings of the 18th Annual Review, Brunswick, ME, July 28-Aug. 2, 1991 (A93-18576 05-38)
Subject Category
QUALITY ASSURANCE AND RELIABILITY
Distribution Limits
Public
Copyright
Other